I applied online. The process took 2 weeks. I interviewed at Citadel (New York, NY) in Dec 2024
Interview
Passed the OA, probability questions. First round was also probability with dice. Second round was market making and investments. They were both on Zoom, but the second interviewer had camera off and called through his phone.
Interview questions [1]
Question 1
Expected value of the sum of the roll of two dice.
I applied online. The process took 3 weeks. I interviewed at Citadel (Sydney) in May 2026
Interview
There are 4 rounds and the first round is very basic, including a 10-minute deep dive into your resume, a discussion regarding your greatest professional accomplishment, and technical questions for the remainder of the time.
I applied through a recruiter. I interviewed at Citadel (De Zoom) in Aug 2025
Interview
The interview process was quite slow, taking several weeks between stages. It included an online assessment focused on probability and mental math, followed by technical interviews testing statistics, brainteasers, and market intuition.
Interview questions [1]
Question 1
They asked me to explain how I would price a coin flip game with asymmetric payouts and to discuss the expected value and variance.
Quant Trading Intern applicants have rated the interview process at Citadel with 4 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 33% positive. To compare, the company-average is 46.4% positive. This is according to Glassdoor user ratings.
Candidates applying for Quant Trading Intern roles take an average of 14 days to get hired, when considering 6 user submitted interviews for this role. To compare, the hiring process at Citadel overall takes an average of 20 days.
Common stages of the interview process at Citadel as a Quant Trading Intern according to 6 Glassdoor interviews include:
IQ intelligence test: 30%
One on one interview: 20%
Skills test: 20%
Phone interview: 10%
Personality test: 10%
Presentation: 10%
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